ClickHouse/debian/clickhouse-server.postinst

#!/bin/sh
set -e

CLICKHOUSE_USER=clickhouse
CLICKHOUSE_GROUP=${CLICKHOUSE_USER}
CLICKHOUSE_DATADIR=/var/lib/clickhouse
CLICKHOUSE_LOGDIR=/var/log/clickhouse-server

test -f /etc/default/clickhouse && . /etc/default/clickhouse

if [ "$1" = configure ]; then
    if [ -x "/bin/systemctl" ] && [ -f /etc/systemd/system/clickhouse-server.service ] && [ -d /run/systemd/system ]; then
        # if old rc.d service present - remove it
        if [ -x "/etc/init.d/clickhouse-server" ]; then
            update-rc.d clickhouse-server remove
            echo "ClickHouse init script has migrated to systemd. Please manually stop old server and restart the service: sudo killall clickhouse-server && sleep 5 && sudo service clickhouse-server restart"
        fi

        /bin/systemctl daemon-reload
        /bin/systemctl enable clickhouse-server
    else
        # If you downgrading to version older than 1.1.54336 run: systemctl disable clickhouse-server
        if [ -x "/etc/init.d/clickhouse-server" ]; then
            update-rc.d clickhouse-server defaults 19 19 >/dev/null || exit $?
        fi
    fi

    # Make sure the administrative user exists
    if ! getent passwd ${CLICKHOUSE_USER} > /dev/null; then
        if [ "$OS" == "rhel" ] || [ "$OS" == "centos" ] || [ "$OS" == "fedora" ]; then
            adduser --system --no-create-home --home /nonexistent \
                --shell /bin/false clickhouse > /dev/null
        else
            adduser --system --disabled-login --no-create-home --home /nonexistent \
                --shell /bin/false --group --gecos "ClickHouse server" clickhouse > /dev/null
        fi
    fi

    # if the user was created manually, make sure the group is there as well
    if ! getent group ${CLICKHOUSE_GROUP} > /dev/null; then
        addgroup --system ${CLICKHOUSE_GROUP} > /dev/null
    fi

    # make sure user is in the correct group
    if ! id -Gn ${CLICKHOUSE_USER} | grep -qw ${CLICKHOUSE_USER}; then
        adduser ${CLICKHOUSE_USER} ${CLICKHOUSE_GROUP} > /dev/null
    fi

    # check validity of user and group
    if [ "`id -u ${CLICKHOUSE_USER}`" -eq 0 ]; then
        echo "The ${CLICKHOUSE_USER} system user must not have uid 0 (root).
Please fix this and reinstall this package." >&2
        exit 1
    fi

    if [ "`id -g ${CLICKHOUSE_GROUP}`" -eq 0 ]; then
        echo "The ${CLICKHOUSE_USER} system user must not have root as primary group.
Please fix this and reinstall this package." >&2
        exit 1
    fi

    if [ ! -d ${CLICKHOUSE_DATADIR} ]; then
        mkdir -p ${CLICKHOUSE_DATADIR}
        chown ${CLICKHOUSE_USER}:${CLICKHOUSE_GROUP} ${CLICKHOUSE_DATADIR}
        chmod 700 ${CLICKHOUSE_DATADIR}
    fi

    if [ ! -d ${CLICKHOUSE_LOGDIR} ]; then
        mkdir -p ${CLICKHOUSE_LOGDIR}
        chown root:${CLICKHOUSE_GROUP} ${CLICKHOUSE_LOGDIR}
        # Allow everyone to read logs, root and clickhouse to read-write
        chmod 775 ${CLICKHOUSE_LOGDIR}
    fi


    if [ -d ${CLICKHOUSE_LOGDIR} ]; then
        # only for compatibility for old metrika user, remove string after 2017-06-01
        su -s /bin/sh ${CLICKHOUSE_USER} -c "test -w ${CLICKHOUSE_LOGDIR}" || chown -R root:${CLICKHOUSE_GROUP} ${CLICKHOUSE_LOGDIR}; chmod -R ug+rw ${CLICKHOUSE_LOGDIR}
    fi

    # Clean old dynamic compilation results
    if [ -d "${CLICKHOUSE_DATADIR}/build" ]; then
        rm -f ${CLICKHOUSE_DATADIR}/build/*.cpp ${CLICKHOUSE_DATADIR}/build/*.so ||:
    fi

fi